Enable text based alternatives for graph display and drawing entry

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Add: `[(7,-3,-1),(-3,-6,1),(-4,-6,5)] + [(0,-8,6),(-4,-5,4),(5,-6,2)]`
 
 

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   x  x    n  |   | (   ) π DNE
   x    (   ) π DNE
( ) ( ] [ ) [ ] —∞ DNE
< > or All Real Numbers DNE
log logn ln n  | | e 
sin cos tan arcsin arccos arctan  
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